Idaho Code § 34-606: Election of presidential electors.

(1) At the general election, 1972, and every four (4) years thereafter, there shall be elected such a number of electors of president and vice president of the United States as the state may be entitled to in the electoral college.

(2) No person shall be elected to this position unless he has attained the age of twenty-one (21) years at the time of the election, is a citizen of the United States and shall have resided within the state two (2) years next preceding his election.

(3) Such electors shall be certified to the secretary of state as provided for by law.